Swing-saw.



A. 1?. WYLIE.

SWING SAW;

APPLICATION FILED B018, 1900.

v Patented Sept. 6, 1910.

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A. P. WYLIE.

SWING SAW.

APPLICATION TILED NOV. 8, 1909.

Patented Sept. 6,1910.

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K.) Jr J6 J7 l J7 11 WWW JAM UNITED STATES PATENT @FFTCE.

ABRAHAM P. WYLIE, OF LAWRENCEBURG, TENNESSEE.

SWING-SAW.

- To all whom it may concern:

shown as it forms no Be it known that I, ABRAHAM a citizen of the UnitedStates, Lawrenceburg, in the county of Lawrence, State of Tennessee,have invented certain new and useful Improvements in Swing- Saws; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to sawing machines, more particularly to theclass of swinging saws, wherein a frame is suspended swingingly abovethe saw table and carrying a saw mandrel supplied with a rotary saw, andhas for one of its objects to provide a simply constructed devicewhereby the saw mandrel may be adjusted to dispose a saw in any requiredposition relative to the table, and also provided with means forinstantly elevating the saw free from the table and the work thereon.

Another object of the invention is to provide a simply constructeddevice whereby P. WVYLIE,

residing at ithe saw may be instantly elevated from the inventionconsists in certain novel features of construction as hereinafter shownand described and then specifically pointed out in the claims; and, inthe drawings illustrative of the preferred embodiment of the invention,Figure 1 is a front elevation, partly in section, of the improveddevice, Fig. 2 is a' side elevation of the improved device in section onthe line 2-2 of Fig. 1, Fig. 3 is a view similar to Fig. 2, showing thesaw mandrel and its supporting frame elevated and the brake applied.

The improved device comprises a support-' ing frame formed of verticalstandards 10 and supporting a horizontal saw table 11 of the usual form.

Mounted for rotation by bearings 12 upon the standards 10 is a maindrive shaft 13 having a drive pulley 14 to which the drive belt will beapplied, the latter not being part of the present invention.

Connected to the confronting faces of two of the standards 10 arebrackets 15-16, the bracket 15 carrying a tubular sleeve or bearing 17,while the bracket 16, is provided with Specification of Letters Patent.

Application filed November 8, 1909.

Patented Sept. 6, 1910. Serial No. 526,832.

a similar bearing indicated at 18. The shaft 13 extends through thetubular members 17-18, but does not necessarily engage therewith.Preferably the apertures in the bearings 17-18 will be larger than theshaft so that the shaft does not engage or bear gpon the tubularmembers, as shown in *ig. l.

Mounted to swing upon the tubular bearings 17-18 is an open frame formedof sections of gas piping, and this frame comprises T-couplings 19-20mounted for rotation upon the members 17-18 and to which sections ofpiping 21-22 are connected, as shown. At their lower ends the pipesections 21-22 are provided with T-couplings 23-24, the latter beingunited by a transverse member formed of pipe sections 25 and a union 26.Connected to the T-couplings 23-24 are other pipe sections 27-28, andconnected to the lower end of the sections 27-28 are T-couplings 29-30.The couplings 29-30 are united by a transverse tubular member 31, whichis arranged to oscillate in the members 29-30. The member 31 is providedwith transverse bearings 32-33 near its ends through which rods 34-35are adjustably supported by adjusting nuts 36-37. The member 31 is alsoprovided with a central bearing 38 through which a rod 39 extends and isadjustably coupled to the member 38 by nuts 40, the object of thevarious rods to be hereinafter explained.

Rigidly secured in the member 27 by rivets or other fastening means 41is a guide rod 42, and similarly secured in the member 28 by rivets orother fastening devices 43 is a guide rod 44, the guide rods dependingbelow the lower ends of the members 29-30, as shown. Slidably arrangedupon the rod 42 is a tubular member 45, while a similar tubular member46 is slida bly disposed upon the rod 44, the members 45-46corresponding to the side members 27-28. At their lower ends the members45-46 are provided with T-couplings 47-48, and the T-couplings areunited by a transverse member formed of sections of piping 49 and unions50. Connected to the lower ends of theT- couplings 47-48 are pipesections 51-52. At its lower end the pipe section 51 is provided with abearing 53, while the pipe section 52 is provided with a similar bearing54, these latter bearings forming supports for a saw mandrel 55 carryinga saw 56 at one end and with a drive pulley 57 centrally thereof and invertical alinement with a larger drive pulley 58 upon the shaft 13, asshown. A drive belt 59 operates over the pulleys 57-5S as shown, and bymeans of which the saw mandrel is operated when the lower frame portionis in its lower position. Mounted for rotation through the frame members45 445 is a shorter shaft (50 having a handle 61 at one end and withcranks 62-63 intermediate its ends and between the members apes. Therods are coupled to the cranks 62-63, as shown. By this means it will beobvious that when the shaft 60 is arranged with its cranks directedupwardly the lower frame portion, which carries the saw mandrel, ismaintained in its lower position with the saw in operative positionrelative to the table 11, as shown in Figs. 1 and 2, and so long as thesaw is operating under normal conditions the shaft (30 will be retainedin the position shown with the saw supporting portion of the frame inits downward position.

In saws of this character it frequently occurs that it is desirable toquickly elevate the saw free from the work with which it is engaged, andwhen such an emergency occurs the operator can instantly elevate the sawby grasping the handle 61 and moving it upwardly, and thereby reversingthe positions of the cranks 62-68 orquickly disposing them in theirdownward position and correspondingly elevating the lower saw carryingportion of the frame and removing the saw quickly from contact with thework on the table.

The nuts 36-37 provid for the adjustment of the rods and consequentlyfor the adjustment of the lower saw carrying frame portion, so that thesaw may be supported at any desired point relative to the table withinthe range of the threads on the rods.

The rod 39 is directed downwardly and is forked at its lower end asshown at ca esand extends upon either side of the central pipe sectionas), and connected to the lower ends of the forked portions is a brakeblock 66 with which the drive pulley 57 engages when the saw carryingportion or frame is elevated, to instantly stop the rotary motion of thesaw when the latter is elevated free from the belt 59, as represented inFig. 3.

By this simple means the saw is not only quickly elevated free from thework upon the table but its rotarymotion is instantly stopped, and alldanger from the continued motion of the saw caused by its momentum, isobviated.

What is claimed is 1. A. device of the class described comprising asupporting structure including a saw table, tubular bearings carried bysaid supporting structure, a shaft extending through said tubularbearings, an upper frame mounted to swing upon said tubular bearings andincluding a transverse member having spaced bearings, a lower framevertically movable relative to said upper frame, a saw mandrel carriedby said lower frame, means for communicating the motion of said shaft tothe saw mandrel, a shaft mounted for rotation in said lower frame andprovided with spaced cranks, suspension rods coupled to said cranks andextending through the bearings of the transverse member of the upperframe, and means for rotating said cranked shaft.

A device of the class described comprising a supporting structureincluding a saw table, an upper frame mounted to swing upon saidsupporting structure and including a transverse member having spacedbearings, a lower frame vertically movable upon said upper frame, a sawmandrel carried by said lower frame, means for communicating motion tosaid saw mandrel, a shaft mounted for rotation in said lower member andprovided with spaced cranks, threaded rods coupled to said cranks andextending through the bearings of the transverse member of the upperframe, adjusting nuts upon said rods, and means for rotating saidcranked shaft.

3. A device of the class described comprising a supporting structureincluding a saw table, an upper frame mounted toswing from saidsupporting structure, a lower frame vertically movable upon said upperframe, a saw mandrel carried by said lower frame, means forcommunicating motion to said saw mandrel, means for adjusting said lowerframe upon said upper frame, means for instantly moving said lower framelongitudinally of said upper frame, and a brake device located in thepath of said saw mandrel when said lower frame is longitudinally mved oradjusted.

a. A device of the class described comprising a supporting structureincluding a saw table, an upper frame mounted to swing upon saidsupporting structure and includ ing a transverse member havingspacedbearings, a lower frame vertically movable upon said upper frame,a saw mandrel car ried by said lower frame, means for communicatingmotion to said saw mandrel, a shaft mounted for rotation in said lowerframe and provided with spaced cranks, threaded rods coupled to saidcranks and extending through the bearings of the transverse member ofthe upper frame, adjusting nuts upon said rods, means for rotating saidcranked shaft, and a rod carried by said transverse member and providedwith a brake member extending into the path of said saw mandrel whensaid lower frame is longitudinally moved or adjusted.

5. A device of the class described comprising a supporting structureincluding a saw table and a drive shaft and a driving pulley, an upperframe mounted to swing from said supporting structure, a lower framevertically movable upon said upper frame, a saw mandrel carried by saidlower frame and carrying a driven pulley, a drive belt leading over saidpulleys, means for adjusting said lower frame upon said upper frame,means for instantly moving said lower frame longitudinally of said upperI frame, and a brake device carried by said upper frame and extendinginto the path of said driven pulley when said frame is longitudinallymoved or adjusted.

6. A device of the class described comprising a supporting structureprovided with a saw table, an upper frame mounted to swing upon saidsupporting structure, a transverse member carried by said upper frameand mounted for rotation therein, rods depending from said transversemember, a lower frame vertically movable upon said upper frame, a sawmandrel carried by said lower frame, means for communicating motion tosaid mandrel, a crank shaft mounted for rotation in said lower frame andcoupled by its cranks to said rods, and means for actuating said crankedshaft.

7. A device of the class described comprising a supporting structureprovided with a saw table, an upper frame mounted to swing upon saidsupporting structure, a transverse member carried by said upper frameand mounted for oscillation therein, rods depending from said transversemember, a lower frame vertically movable upon said upper frame, a sawmandrel carried by said lower frame, means for communicating motion tosaid saw mandrel, a cranked shaft mounted for rotation in said lowerframe and coupled by its cranks to said rods,

another rod connected to said oscillating member and having a brakedevice at its free end, and extending mto the path of the mandrel,shaft.

8. A device of the class described comprising a supporting structureprovided with a saw table, an upper frame mounted to swing upon saidsupporting structure, a transverse member carried by said upper frameand mounted for oscillation therein, rods depending from said transversemember, a lower frame vertically movable upon said upper frame andcomprising a transverse member, a saw mandrel carried by said lowerframe, means for communicating motion to said saw mandrel, a crank shaftmounted for rotation in said lower frame and coupled by its cranks tosaid rods, another rod connected to said oscillating member and forkedat its free end and bearing upon opposite sides of the transverse memberof the lower frame, a brake device carried by said forked rod portionsand eX- tending into the path of the mandrel, and means for rotatingsaid cranked shaft.

9. A device of the class described comprising a supporting structureprovided with a saw table, an upper frame mounted to swing upon saidsupporting structure, a transverse member carried by said upper frameand mounted for oscillation therein, a lower frame vertically movablerelative to said up per frame and including a transverse connectingmember, a saw mandrel carried by said lower frame, a rod carried by saidosand means for actuating said cranked cillat-ing member and forked atits free end and bearing upon opposite sides of the transverse member ofthe lower frame, and a brake device carried by the forked portions ofsaid rod and extending into the path of said mandrel, and means foractuating said movable lower frame.

In testimony whereof, I affix my signature, in presence of twowitnesses.

ABRAHAM P. WYLIE. Witnesses:

M. B. TODD, E. L. WYLIE.

